A method for transmitting/receiving, by a User Equipment, a signal in a mobile communication system includes: transmitting an authentication request message to a wireless LAN; receiving an authentication response message corresponding to the authentication request message from the wireless LAN; and transmitting, to a base station, a message for supporting a multi-connection mode based on the authentication response message. It is possible to generate an access connection or to provide a QoS setting when simultaneously accessing a 3GPP system and a non-3GPP system and transmitting/receiving data, so that a more improved method and device for transmitting and receiving data can be provided to a user.
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June 20, 2014
December 31, 2019
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